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Skip to Search Results- 1Antwi Peprah, Benjamin
- 1Beckers, Nicole
- 1Brown, Houston J. S.
- 1Bunquin, Jeffrey
- 1Chakrabarti, D.
- 1Cho, Byong Kwon.
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A New Approach to Molecular Hydrodesulfurization Catalysts: Allyl-capped Trialkylphosphoranimide-bridged Late First-row Transition Metal Clusters
DownloadFall 2017
A series of new trialkylphosphoranimide allyl-capped clusters [M(ƞ3-allyl)(NPR)3]2, (M = Fe, Co or Ni, R = Et, tBu or Ph) were synthesized. The nickel dimers [Ni(ƞ3-allyl)(NPR3)]2, R = Et, Ph are diamagnetic and have been fully characterized using NMR spectroscopy, X-ray crystallography,...
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Spring 2021
A thorough overview of esters and their reductions is presented. A large focus was placed on reductions via homogeneous catalytic hydrogenation. Although several ester hydrogenation systems have been developed, the production of highly enantioenriched alcohols has generally relied upon the usage...
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Breaking New Ground with the Suzuki-Miyaura Reaction: Stereoselective Cross-Couplings of 1,1-Diboronyl Alkanes
DownloadFall 2015
Synthetic organic chemistry is an area that has seen incredible growth through the years. The level of molecular complexity that can be achieved through available synthetic methods today is remarkable. Still, as the field continues to progress, increasing focus is being placed upon the strategic...
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Spring 2013
In every thermal upgrading process, short-chain hydrocarbons contain a part of the gas byproducts. These compounds are hydrogen-rich materials, which are considered as low value wastes. In this study, the efforts were made to catalytically convert these off-gases to liquid fuels. Synthetic gases...
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Characterization of asphaltene molecular structures by cracking under hydrogenation conditions and prediction of the viscosity reduction from visbreaking of heavy oils
DownloadSpring 2013
The chemical building blocks that comprise petroleum asphaltenes were determined by cracking samples under conditions that minimized alterations to aromatic and cycloalkyl groups. Hydrogenation conditions that used tetralin as hydrogen-donor solvent, with an iron-based catalyst, allowed...
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Cost-Effective Catalysts for the Electrochemical and Photoelectrochemical Reduction of Carbon Dioxide
DownloadFall 2019
The growing consumption of fossil resources has rapidly depleted fuel availability and increased CO2 emission, which presents two of the most prominent crises in the modern era. CO2 reduction reaction (CO2RR) at ambient conditions using electrochemical (EC) and photoelectrochemical (PEC) methods...
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Design and evaluation of a new Lewis acid-assisted Lewis acid catalyst system and further applications of a double-allylation reagent
DownloadFall 2009
Asymmetric synthesis is one of the most important areas of organic chemistry. Despite of the prevalence of asymmetric catalysts, there is still room for improved catalyst systems. Chapter 2 describes the design and evaluation of a new Lewis acid-assisted Lewis acid (LLA) catalyst system. Many...
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Design, Development and Mechanistic Study of Ruthenium-Based Catalysts for the Hydrogenation of Imides and Amides
DownloadSpring 2014
Prior mechanistic studies demonstrate that trans-[RuH2((R)-BINAP)((R,R)-dpen)] is a remarkably active carbonyl reducing agent at low-temperatures in THF-d8. This dissertation describes the monohydrogenation of cyclic meso-imides using this catalyst and related complexes under mild conditions....
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Development of Ir- and Rh-Catalyzed Deoxygenation and Carbene Cross Coupling Reactions of Allylic Carbonates
DownloadFall 2016
Transition metal-catalyzed allylic substitution reactions are widely used for the selective formation of new bonds. This class of reaction has been extensively studied with a variety of nucleophiles and under optimized conditions that will furnish product in high yield and with high chemo-,...